<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        input{
            width: 200px;
            height: 50px;
            margin-bottom: 10px;
        }
    </style>
</head>
<body>
<input type="text" placeholder="用户名">
<br>
<input type="password" placeholder="密码">
</body>
</html>